Er^3+,Yb^3+,Cr^3+:Phosphate glass cylinderical/square rods for Xenon tube pumped laser transmitters of LRFs or 1540 non-ablative fractional aesthetic cosmetics laser hand pieces

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Description

Er, Cr,Yb phosphate glass is the raw material for making the solid gain medium crystal for flash lamp pumped lasers, the erbium-doped concentration is 0.13～0.25×1020cm-3, and the light output energy is from millijoule to joule level.

Erbium Glass doped with Er3+, Yb3+ and Cr3+, Erbium doped glass laser provides a useful coherent source in the spectral range near 1.5 μm, which is relatively safe for the human eye and is convenient in many applications, such as Lidar and range measurements, fiber-optic communication, and laser surgery.

In spite of the considerable progress in the development of InGaAs laser diode pump sources, Xe flash-lamp will continue to be used as pump sources of Er:Glass lasers because of their high reliability and low cost, and also the simplicity of design of such systems. Since about half the flash-lamp radiation energy is emitted in the visible and near infrared (IR) ranges, a second sensitizer Cr3+ is introduced into Yb-Er laser glasses to utilize this energy.

Specifications

Type Of Crystal:	Er Glass
Crystal Diameter:	3 mm
Crystal Length:	3 mm
AR Coating:	Both sides
Wavelength:	1535 nm
Maximum Dimensions:	Dia. (3-12.7) (3-150) mm²
Concentrations:	0.13～0.25
Cross Section For Stimulated Emission:	0.8
Fluorescent Lifetime:	8.3-8.6 ms
Refractive Index (1535nm):	1.56
Refractive Index (589.3nm):	1.53
Abbe Value:	66
Dn/dT (10 -6 /ºC) (20~100ºC):	-1.72
Density:	3 g/cm³
Surface Flatness:	＜λ/8 @632nm
Wavefront Distortion:	＜λ/4 @632nm
Surface Quality:	10-5
Parallel:	10
Perpendicular:	15′
Clear Aperture:	>90%
Chamfer:	<0.1x45º

Download Data Sheet

Features

Wavelength of laser: 1535nm

Concentrations: as required

Cross section for stimulated emission (10-20 cm^2): 0.8

Fluorescent lifetime (ms): 8.3-8.6

Applications

Old generation Xenon lamp side-pumping laser transmitters of long distance laser rangefinder as replacement of active element when replacing, repairing old military equipment sighing systems